@article{IM2_1970_4_1_a5,
     author = {N. K. Nikol'skii and B. S. Pavlov},
     title = {Eigenvector bases of completely nonunitary contractions and the characteristic function},
     journal = {Izvestiya. Mathematics },
     pages = {91--134},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1970},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1970_4_1_a5/}
}